#include <iostream>
using namespace std;

int main() {
    long N;
    cin >> N;
    if (N > 0)
    {
        cout << "positive";
    } else if (N == 0)
    {
        cout << "zero";
    } else if (N < 0)
    {
        cout << "negative";
    }
    
    return 0;
}